Ashanti

Dr. David Linderby and his wife Anansa are carrying out an inoculation program in a small African village when Anansa disappears. The police can do nothing to find her and David has almost given up hope when he hears a rumour that Anansa has been kidnapped by a slave trader called Suleman, to be sold to an Arab prince.
The authorities deny that the slave even exists, so David must find unofficial organizations to help him; a shadowy world where the rescuers of the slave are just as ruthless as the traders themselves. Enlisting the help of Malik, a nomad whose family were stolen by Sulelman, David must leave civilization behind and travel across the desert to find Anansa. (official distributor synopsis)